BCOMP Cams (903-12) 1.400" O.D. Single Valve Spring, (Set of 12) ReviewbP PP COMP Cams (903-12) 1.400" O.D. Single Valve Spring, (Set of 12) P1.400 inches outside diameter, 1.015 inches inside diameter single valve springP80 pounds 1.700 inches seat load and 212 pounds 1.250 inches open load capacityP.